In standard first-passage percolation on Z(d) (with d greater than or
equal to 2), the time-minimizing paths from a point to a plane at dist
ance L are expected to have transverse fluctuations of order L(xi). It
has been conjectured that xi(d) greater than or equal to 1/2 with the
inequality strict (superdiffusivity) at least for low d and with xi(2
)= 2/3. We prove (versions of) xi(d) greater than or equal to 1/2 for
all d and xi(2) greater than or equal to 3/5.